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Acquisition	9 Months Ended
Acquisition	Dec. 01, 2018
Business Combinations [Abstract]
Acquisition	Acquisition On June 12, 2017, we acquired 100 percent of the stock of EFCO Corporation, a privately held U.S. manufacturer of architectural aluminum window, curtainwall, storefront and entrance systems for commercial construction projects, for $192 million in cash, funded through our committed revolving credit facility. EFCO's results of operations have been included in our consolidated financial statements and within the Architectural Framing Systems segment since the date of acquisition.